Typewriting machine



June 21, 1938. V A. e. F. KUROWSKI TYPEWRITING MACHINE Filed Nov. 25, I936 5 Sheets-sheaf. 1

ATTORNE June 21, 1938. A. e. F. KUROWSKI "TYPEWRITING MACHINE Filed Nov. 23, 1936 6 Sheets-Sheet 2 lNVENTOR ATTORBLEY a n o F O Y mw W m m cm I Q N 0 Q I June 1938- A. e. F. KUROWSKI TYPEWRITING MACHINE 3 Sheets-Sheet 3 Filed NOV. 23, 1936 ATTO R NEY Patented June 21, 1938- UNITED s'mrss PATENT ()FFICE TYPEWRITING MACHINE Application November 23, 1936, Serial No. 112,269

29 Claims.

This invention relates to typewriters, and more especially to margin-stops.

It is a feature of the invention to provide a pair of concurrently adjustable margin-stops intercepted by stops on the carriage and connected with a pair of parallel racks, one with each, the racks being operatively connected with a common intermediate engaging pinion which has a definite fixed position on the frame of a typewriter and isassociated with parallel guides so that the movement of a margimstop in one direction effects the simultaneous and equidistant movc ment of the other margin-stop in the opposite direction, one of the margin-stops having a part movable to actuate a signal and a key-lock, when engaged by a part on the carriage; the pinion may be fixed centrally of the frame of the type writer; the movable part may be the lower part of the margin-stop and may be depressed by an extension fixed on the carriage; the right marginstop may be adjustably set on the frame by a latch so that its movement simultaneously moves the other margin-stop, and in an alternate form both margin-stops are freely adjustable, the pin-- ion being surmounted by a knurled button and rotatable therewith and being settable in any rotatable position by a latch; the latching detent may be released by an accessible lever; and the part that operates the signal may also operate the key-lock. Pointerson each margin-stop may indicate the adjusted positions on a scale.

Other features and advantages will hereinafter appear.

In. the accompanying drawings,

Figure 1 is a perspective view with some parts cut away.

Figure 2 is a cross-section through the left or signal-operating margin-stop.

Figure 3 is a plan'view of the letter-space scale.

Figure 4 is a plan View with the scale and actuating knob cut away to show the margin-stop adjusting racks, looking in the direction of the arrows 4-4 of Figure 5.

Figure 5 is a part sectional view looking in the direction of the arrows 5-4: of Figure 4.

Figure 6 is a part sectional view looking in the direction of the arrows 6-$ of Figure 4.

Figure '7 is a view similar to Figure 4, but showing a modification.

Figure 8 is a diagrammatic view showing the carriage approaching the bell and locking positions.

Figure Qis a diagrammatic view showing the carriage banked against the right margin-stop at the beginning of a line.

Figure 10 is a central part section through the middle of Figure 7 and looking toward the left. Figure 11 is an enlarged perspective view of a modification showing the adjusting button an its detent shown in Figure '7. 5

- Referring to the drawings, a typewriter-frame supports a reciprocating carriage 2i, on which a platen 22 is rotatably mounted and supports a work-sheet 23 upon which types 24 imprint. A wheel 25 supports the front of the carriage 2| 10 on a notched rail 26. A letter-space scale 21 is secured by screws 28 to a scale-bar 3i]. Screws 3| at either end of the scale-bar 30 secure the scale-bar 39 to the frame it]. A scale-pointer 32 is mounted on the carriage 2| over the wheel 25. 15 A stop 33 projects forwardly from the carriage 2i to the left of the wheel 25 and is so positioned that it engages by overriding a, depressible piece 34 which rests on a cross-bar 35 which has at either end a forwardly projecting arm 36 pivo otally mounted on a rod 3'l which connects the two sides of the frame 20. A restoring spring 38 is secured to the frame 2|] and engages one of the arms 36 and tends to hold the cross-bar 35 in an upward position in engagement with a pin il projecting inwardly from the inside of one side of the frame 20. The depressible piece 34 has a usual signal-operating cam 39 and a usual line-lock cam 40 as well as the final stop GI and is secured to a left margin-stop 42 which is slid- 3o ably mounted on the rod 31. The depressible piece 34 is adjustable with the margin-stop 42 in the direction of movement of the carriage in either direction. An arm 43 is secured by screw M to the bottom of the margin-stop 4'2 and pro- 35 jects underneath the cross-bar 35 so that the lower part of the pivoted margin-stop 42 and the cross-bar 35 must move upwardly and -down wardly together. A pointer 45 shown in Figure 3 in relationship to the scale 21' is secured on the front vertical face of the margin-stop 42 by screws A6. An arm is secured by screws 5! to the rear vertical wall of the cross-bar 35 and depends downwardly near the inner wall of the left side of the frame 2!] and also has at its lower end, as is well known in the art, as shown in Figure 1, an arm 52 depending therefrom and pivoted thereon by a pin 53. Transversely of the lower end of the arm 52 on the side toward the frame wall is a transverse pin 54 and on the inner side a camming lug 55 which rests on the upper edge of a lever 56 which is formed with a camming surface for actuating the bell-lever 53. A leftwardly turned end d9 of the arm 52 acts as a stop against the rear vertical wall of the arm 55 50 to prevent yielding of the arm 52 on the pin 53 in one direction. A ball 51 is carried on the rear end of the arm 56 pivoted on the inside of the frame 20 in a manner well known in the art so that when the carriage-stop 33 engages the right cam 39 of the cross-piece 3 the bell 58 is struck by the ball to signal the approach of the end of a line. An opposite arm 59 normally held in a rearward position, as shown in Figure 1, by a spring 60 secured to it and to the frame 20 is fast on a rock-shaft 6! which supports a second upstanding arm 82 on which is supported a crossrod 63 which is adapted to move forwardly and to underlie a hook 64 supported on each key-lever 65. This cross-rod forms a key-lock 63 which is actuated by the movement of the carriage-stop 33 further to the left on the cross-piece 34, thereby camming it down so as to swing the arm 55 which causes the pin 5G to engage the rear ver-- tical wall of the upstanding arm 53 and push it forward together with the rod 63 into the locking position of the latter under the heel; 6 1. After the carriage-stop 33 has engaged the stop 4|, the margin may be released for a few more letter spaces by pushing rearwardly a plunger 48 which engages the arm 50 in a manner well known in the art.

Mounted on the right side of the wheel 25 on the carriage 2| is an upwardly movable stop 66 formed by a forward right-angled bend from the left end of a lever 61 mounted on a pivotscrew 68 secured to the carriage 2|. A spring 69 is secured to the top of lever El and on the left side of the pivot-screw 68 and tends to hold the carriage-stop 66 down in its operative position. The other end of the lever 6'! projects through a slot in the end of the carriage to form a releasing arm which may be depressed sufficiently to raise the carriage-stop 56 up out of engaging position with a right-hand adjustable margin-stop N. This margin-stop H is a rear Ward projection from a body-portion 12 which is slidably mounted on the rod 31. The pointer 13 is secured to the front vertical face of the body-portion 12 by screws 14 and overlies the scale 21 as shown in Figure 3. The rail 25 is provided on the front edge with teeth 75 as shown in Figures 4 and 6, which are engaged by teeth 89 on the rear edge of an arm 16 which is mounted by means of a vertical pivot-screw T! on the bodyportion 12. A spring 18 is mounted in a socket in the inner wall of the body-portion 12 and in an opposite socket in the inner wall of the arm 16 to the right of the pivot screw i1 and therefore tends to keep the arm 75 in engagement with the teeth on the rod 26. A finger-piece 18 may extend forwardly from the lower part of the pivoted arm l6 and to the left of this fingerpiece 19 is mounted a thumb-piece 85 which may be formed with and extended downwardly from the body of the pointer 13-. It is clear that the pressure of the finger and thumb on the fingerpiece 79 and the thumb-piece 85 respectively removes the arm '16 from engagement with the tooth 15 so that the margin-stop H may be adjusted either to the right or to the left along the rod 31. Near the left side of the margin-stop 42 is formed a front slot 8| which secures a bracket 82 slidably on the rod 5?. The bracket 82 has a laterally extending and forwardly inclined flat arm 83 to the upper surface of which is secured, by means of screws 84 passed through the lower inner wall of the arm 33, an elongated arm 85 the rear edge of which is notched to form a rack 88. By reference to Figure 5 it is seen that the margin-stop at the left is formed of two parts pivotally mounted on the rod 31 for movement toward and away from each other, a construction which permits the elongated arm 35 and the bracket 82 to remain in the upper position and the lower portion 452 of the marginstop to be depressed with the connected depressible piece 34. As shown in Figure 6, a pin 8? is mounted on the top fiat surface of the body-portion 12 of the right-margin-stop 1| and a bracket 88, which is of a general U-shape except that the upper part is inclined forwardly and downwardly, has a circular aperture in the lower portion adapted to fit over the pin Bl. Screws 90 are passed through the upper portion and into an arm 9| which has on its forward edge notched teeth forming a rack 92 which is slidable to the left or right concurrently with the margin-stop H. A guide-plate has an upturned front wall 9 1 and a parallel upturned rear wall 95 and is secured by two screws 06 to the lower wall of the scale-bar 30 from which the plate 93 is spaced by means of studs 9i. A centrally positioned pivot-screw 98 is secured to the lower Wall of the scale-bar 3% and mounts a cylindrical spacing collar 99 on which is rotatably mounted a pinion Hit. The teeth of the pinion lilt and the toothed racks 8G, 92 are cured in constant engagement by the guide-- walls 9 5 and 95. The guide-plate 93 may be centrally positioned in respect to the scale-plate 3!) as shown in Figure 3. The scale 21 may have at the top the usual letter-space indexing and at the bottom a separate scale in which zero is at the center and numerals one to eight inclusive on either side indicate the settings by means of the carriage-stop pointers 45 and '53 of their respective margin-stops. It is clear that, in the construction which has been described, if the pinion I00 is fixed centrally of the machine and the arm 16 is released from the teeth i5 by grasping the finger-piece F9 and thumb-piece 8i] and the margimstop 7| is thereupon slid along the rod 37 in either direction, then the margin-stop i2 is concurrently and equidistantly moved in an opposite direction, so that if the right margin-- stop is set a given number of letter spaces to one side of the center the other margin-stop is also set the same number of letter spaces away from the center. It is also clear that the arm 85 and the bracket 82 are supported by the guide 93 so that they do not tilt downwardly when the carriage-stop 33 depresses the part 42 of the margin-stop, or, in other words, the lower part of the left margin-stop is depressible with reference to the upper part of the margin-stop. It is also clear that the lower surface of the scale-bar 3!! holds the arms 85 and 9| in assembled position on the guide-plate 53 and by removing the sctews 3i from the frame 2!) access is readily had to the assembly of the pinion Wt and the racks 86 and 92. No latch is required on the left marginstop 2 to secure it in an adjusted position but the arm 16 when latched with the teeth 15 of the rail 26 latches simultaneously both of the margin-stops against movement along the rail. A downwardly and forwardly extending arm 28 fastened to the front of the carriage 2| lies under the rail 26 and prevents upward movement of the carriage with reference to the rail. In Figures '7, 10, and 11, a modification is shown in which the central portion of the scale 21 is omitted and the two parts are secured to the scale-bar 3!] by screws H35 at the inner ends of each part. The guide-plate 93 has a central aperture to receive the head of a screw I06 which holds the pinion I tight against the under flat surface of the scale-bar 30 and therefore in mesh with the racks on the arms 85 and 9|. The'screw I06 fits in the lower end of a post I0I which is square in cross-section and the head of the screw secures the pinion I00 on this post. Above the pinion I00 is mounted a cylindrical bearing I00 rotatable together with the post I0I in a central aperture in the scale-bar 30. Above the scale-bar 30 and rotatable on the upper surface thereof with the post I0! is a toothed wheel I09 and overlying the latter is a knurled button IIO which is held on the top of the post I0I by a screw III. A yieldable detent spring H2 is mounted on the scale-bar 30 and engages one side of the toothed wheel I09. A lever-arm II3 which has a forward upstanding finger-piece I I4 is oscillatable on a pin I I5 which is mounted on the top of the scalebar 30. The opposite end of the lever-arm H3 has a locking tooth II6 which looks the toothed wheel I09 by engaging in one of the notches between the teeth. A suitable spring III has one end fast in a hole in the top of the scale-bar and the other end overlying the lever II 3, the spring being turned about the post I I5 on which the lever H3 is pivoted in such manner that the spring tends to hold the tooth I It in looking position. It is now clear that if the finger-piece I I4 is moved toward the right to release the looking tooth IIG, the knurled button IIO may be rotated in either direction and that concurrently both margin-stops 42 and II are moved equidistantly in opposite directions along the rod 37 and that when the 'finger piece H4 is released the detent-tooth H6 forthwith locks the marginstops in the adjusted position. As is shown in Figure '7, in the modification it is not necessary to have the teeth I5 on the rail 20 nor is it necessary to have the toothed arm I6 mounted on the body I2 of the margin-stop II thereby simplifying the construction of the right-hand marginstop.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said marginstop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second margin-stop connected with said second rack. and a pinion fixed on the frame intermediate said racks and connected with said racks, said second margin-stop being adjustably fixed on the frame, whereby the adjustment of said second margin-stop simultaneously and concurrently slidably moves the first margin-stop on said rod.

2. In a typewriter, in combination, a recipro catory carriage, a stop engaging member there on, a frame, a rod mounted in the frame in par-- allel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod,a rack for sliding said margin-- stop, said margin-stop having two parts, one of which is fixed to saidrack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second margin-stop connected with said I second rack, and a pinion fixed on the frame intermediate said racks, connected with said racks and positioned centrally of said margin-stops, said second margin-stop being adiustably fixed on the frame, whereby adjustment of said second margin-stop simultaneously and concurrently slidably moves the first margin-stop a distance from the center equal to that of the second mar gin-stop.

3. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said marginstop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device,

a second rack in parallel with said first rack, a second margin-stop connected with said second rack, a second rod on which the carriage reciprocates, teeth formed on the front of said rod, a

toothed arm mounted on said second margin-stop 1 and yieldably engaging said teeth, and a pinion fixed on the frame intermediate said racks and connected with said racks, said second marginstop being adjustably fixed on the frame, where"- by the adjustment of said second margin-stop simultaneously and concurrently slidably moves the first margin-stop on said rod.

4. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member there-- on, a frame, a rod mounted in the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and sliciable on said rod, a rack for sliding said marginstop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second margin-stop mounted on said rod and connected with said second rack, and a pinion fixed on the frame intermediate said marginstops whereby said margin-stops are simultaneously and concurrently adjustable.

5. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said marginstop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device,a second rack in parallel with said first rack, a second margin-stop mounted on said rod and connected with said second rack, and a pinion fixed on the frame intermediate and centrally of said margin-stops whereby said margin-stops are simultaneously and concurrently adjustable.

6. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in'the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said margin-stop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second marginstop mounted on said rod and connected with said second rack, a pinion fixed on the frame intermediate said margin-stops whereby said margin-stops are simultaneously and concurrently adjustable, and means for rotating said pinion.

7. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in the framein parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said margin-stop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second margin stop mounted on said rod and connected with said second rack, a pinion fixed on the frame intermediate said margin-stops whereby said margin-stops are simultaneously and concurrently adjustable, means for rotating said pinion, and a latch for securing said pinion in rotatable adjustment.

8. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said margin-stop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second marginstop mounted on said rod and connected with said second rack, a pinion fixed on the frame intermediate said margin-stops whereby said margin-stops are simultaneously and concurrently adjustable, and guides for said racks adj acent said pinion.

9. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted in the frame in parallel with the direction of the reciprocation of the carriage, a margin-stop mounted on and slidable on said rod, a rack for sliding said margin-stop, said margin-stop having two parts, one of which is fixed to said rack, and the other of which swings upwardly and downwardly on the rod, a signaling device, means connected with said swinging part for operating said signaling device, a second rack in parallel with said first rack, a second margin-stop connected with said second rack, a pinion rotatably mounted in fixed position on the frame intermediate said margin-stops and in mesh with said racks whereby said margin-stops are simultaneously and concurrently adjustable, guides for said racks, and a knob for rotating the pinion.

10. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, two margin-stops mounted on the frame for adjustment in the direction of the carriage movement, two parallel racks, one connected with each margin-stop, guides for said racks, a pinion intermediate and operatively engaging said racks. said pinion being pivoted on the frame whereby said margin-stops are adjustable toward and away from each other concurrently, and a single latch for latching both of said margin-stops in their adjusted positions.

11. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, two margin-stops mounted on the frame for adjustment in the direction of the carriage movement, two parallel racks, one connected with each margin-stop, guides for said racks, a pinion intermediate and operatively engaging said racks and intermediate said margin-stops, said pinion being pivoted on the frame whereby said marginstops are adjustable toward and away from each other concurrently, and a single latch for latching both said margin-stops in adjusted position.

12. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon,

a frame, a cross rod in the frame, two marginstops mounted on the rod for adjustment in the direction of the carriage movement, two parallel racks, one connected with each margin-stop,

guides for said racks, a pinion rotatably mounted in fixed position on the frame intermediate and operatively engaging said racks, said pinion being pivoted on the frame whereby said margin-stops are adjustable toward and away from each other concurrently, and a single latch for latching both said margin-stops in their adjusted positions.

13. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod in the frame, two margin-stops mounted on the rod for adjustment in the direction of the carriage movement, two parallel racks, one connected with each margin-stop, guides for said racks, a pinion rotatably mounted in fixed position on the frame intermediate and operatively engaging said racks, and intermediate said margin-stops, said pinion being pivoted on the frame whereby said margin-stops are adjustable toward and away from each other concurrently, and a single latch for latching both said margin-stops in their adjusted positions.

14. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, two margin-stops mounted on the frame for adjustment in the direction of the carriage movement, two parallel racks, one connected with each margin-stop, guides for said racks, a pinion intermediate and operatively engaging said racks, said pinion being pivoted on the frame whereby said margin-stops are adjustable toward and away from each other concurrently, a single latch for latching both of said marginstops in their adjusted positions, pointers on the margin-stops, and a scale on the frame with which said pointers cooperate to indicate the position of said margin-stops.

15. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, two margin-stops mounted on the frame for adjustment in the direction of the carriage movement, two parallel racks, one connected with each' margin-stop, guides for said racks, a pinion intermediate and operatively engaging said raeks and having a pivot fixed on the frame, whereby said margin-stops are adjustable toward and away from. each other concurrently, and a single latch for latching both of said margin-stops in their adjusted positions.

16. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a scale-bar mounted on said frame,

two margin-stops mounted on the frame for ad justm'ent'in the direction of the carriage movement, two parallel racks, one connected with each margin-stop, guides for said racks, a pinion intermediate and operatively engaging said racks, said pinion being pivoted on the scale-bar whereby said margin-stops are adjustable toward and away from each other concurrently, and a single latch for latching both of said margin-stops in their adjusted positions.

17. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, two margin-stops mounted on the frame for adjustment in the direction of the carriage movement, two parallel racks, one connected with each margin-stop, guides for said racks, a pinion intermediate and operatively en gaging said racks, a scale-bar on said frame, and a support for said pinion secured to the back of said scale-barfwhereby said margin-stops are adjustable toward and away from each other concurrently.

18. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod, two margin-stops mounted on the rod for adjustment in the direction of the carriage movement, twoparallel racks, one connected with each margin-stop, guides for said racks, a scale-bar mounted on said frame, a pinion engaging said racks, a support for said pinion secured to the back of said scale-bar, and guides for said racks mounted on said support, whereby said margin-stops are adjustable toward and away from each other concurrently.

19. In a typewriter, in combination, a recip rocatory carriage, a stop engaging member thereon, a frame, a key, a key-lock, a signaling device, a rod in the frame, a left-hand marginstop, said margin-stop being slidable on the rod and having two cams, said cams being depressib le, a stop on the carriage successively engaging said cams to operate the signaling device and the key-lock, a transverse slot in said margin-stop, a bracket mounted on said rod and in said slot, a rack-arm secured on said bracket, a second margin-stop at the right on said rod, a releasable stop on the carriage engageable with said second margin-stop, a rack-arm secured to said second margin-stop, a scale-bar on the frame, a piece secured on the under side of the scale-bar to support and guide said rack-arms, a pinion supported on said piece between said guides and engaging both of said rack-arms, whereby both margin-stops may be simultaneously and concurrently moved in either direction equidistantly, and a single latch for latching both of said margin-stops.

20. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted on said frame, a signaling device, a margin-stop slidable on said rod in the direction of carriage movement, said margin-stop being swingable about said rod to actuate said signaling device, a rack pivotally connected to said margin-stop, means for guiding said rack in lineal movement with said I margin-stop, and means for releasably locking said rack against movement.

21. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted on said frame, a keylocking device, a margin-stop slidable on said rod in the direction of carriage movement, said margin-stop being swingable about said rod to operate said key-locking device, a rack pivotally connected to said margin-stop, means for guiding said rack in lineal movementwith said margin-stop, and means for releasably locking said rack against movement.

22. In a typewriter, in combination, a reciprocatory carriage, a stop engaging member thereon, a frame, a rod mounted on said frame, a signal-.- ing and key-locking device, a margin-stop slidable on said rod in the direction of carriage moveslidable on said rod in the direction of carriage movement, said margin-stop being swingable about said rod to actuate said signaling and keylocking device, a rack pivotally connected to said margin-stop, means for guiding said rack in lineal movement with said margin-stop, a pinion in mesh with said rack, means for rotating said pinion whereby to adjustably position said margin-stop along said rod, and releasable means for locking said pinion against rotation.

24. In a typewriter, in combination, a frame, a carriage mounted for reciprocating movement relatively to said frame, a stop engaging member thereon, a first margin-stop and a second margin-stop slidably mounted on said frame in the direction of carriage movement, each marginstop including a rack, a pinion rotatably mounted on said frame and in mesh with said racks whereby a movement of one of said margin-stops is transmitted to effect an equivalent movement of the other margin-stop, and means for releasably fixing said margin-stops in adjusted positions.

25. In a typewriter, in combination, a frame, a carriage mounted for reciprocating movement relatively to said frame, a stop engaging member thereon, a first margin-stop and a second mar gin-stop slidably mounted on said frame in the direction of carriage movement, each marginstop including a rack, a pinion rotatably mounted on said frame and inmesh with said racks whereby a movement of one of said margin-stops is transmitted to effect an equivalent movement of the other margin-stop, and means for releasably fixing said margin-stops in adjusted positions, said second margin-stop having a releasable connection withthe corresponding rack to permit independent movement 'of said first margin-stop. 26. In a typewriter, in combination, a frame, a carriage mounted for reciprocating movement relatively to said frame, a stop engaging member thereon, a first margin-stop and a second margin-stop slidably mounted on said frame in the direction of carriage movement, each marginstop including a rack, a pinion rotatab-ly mount- :ed on said frame and in mesh with said racks,

means for yieldably resisting rotation of said pinion, and means for rotating said pinion whereby to move both of said margin-stops simultaneously and equidistantly.

27. In a typewriter, in combination, a frame, a carriage mounted for reciprocating movement relatively to said frame, a stop engaging member thereon, a first margin-stop and a second margin-stop slidably mounted on said frame in the direction of carriage movement, each marginstop including a rack, a pinion rotatably mounted on said frame and in mesh with said racks whereby a movement of one of said margin-stops is transmitted to effect an equivalent movement of the other marginstop, a toothed wheel rotatable with said pinion, and a resilient detent engaging said Wheel to yieldably hold both of said margin-stops against movement.

28. In a typewriter, in combination, a frame, a carriage mounted for reciprocating movement relatively to said frame, a stop engaging member thereon, a first margin-stop and a second margin-stop slidably mounted on said frame in the direction of carriage movement, each marginstop including a rack, a pinion rotatably mounted on said frame and in mesh with said racks whereby a movement of one of said margin-stops is transmitted to effect an equivalent movement of the other margin-stop, a toothed Wheel rotatable with said pinion, and a spring-pressed lever having a detent engaging a tooth of said wheel to releasably lock said pinion against rotation.

29. In a typewriter, in combination, a frame, a carriage mounted for reciprocating movement relatively to said frame, a stop engaging member thereon, a first margin-stop and a second margin-stop slidably mounted on said frame in the direction of carriage movement, each marginstop including a rack, a pinion rotatably mounted on said frame and in mesh with said racks whereby a movement of one of said margin-stops is transmitted to effect an equivalent movement of the other margin-stop, a toothed wheel rotatable with said pinion, a resilient detent engaging said wheel, and a spring-pressed lever having a detent engaging said wheel to releasably lock said pinion against rotation.

ALFRED G. F. KUROWSKI. 

